Polymer-based technology platform for robust electrochemical sensing using gold microelectrodes

SENSORS AND ACTUATORS B-CHEMICAL

卷:161

Article

Kuphal, M.¹  Mills, C. A.²  Korri-Youssoufi, H.³  Samitier, J.^1,4,5 

[1] Inst Bioengn Catalonia IBEC, Barcelona 08028, Spain

[2] Univ Surrey, Adv Technol Inst, Guildford GU2 8HD, Surrey, England

[3] Univ Paris 11, Inst Chim Mol & Mat Orsay, ECBB, CNRS,UMR 8182, F-91405 Orsay, France

[4] Ctr Invest Biomed Red Bioingn Biomat & Nanomed Ci, Zaragoza 50018, Spain

[5] Univ Barcelona, Dept Elect, E-08028 Barcelona, Spain

关键词: Poly(ethylene naphthalate);    Photolithography;    Microelectrodes;    Interdigitated electrodes;    Electrochemical characterization;    Electrochemical sensor;   

DOI  :  10.1016/j.snb.2011.10.032

来源: Elsevier

【 摘 要 】

Rapid and inexpensive development of electrochemical sensors with good exploitation potential may be produced using a polymer as a substrate material. However, fabrication of polymer-based sensors is challenging. Using photolithography and etching of gold-coated poly(ethylene-2,6-naphthalate) (PEN), we have succeeded in fabricating disk-shaped and interdigitated microelectrodes (mu Es). The electrodes have an excellent adhesion to the polymer and are encapsulated using a novel room-temperature process, applicable for low-cost, high-throughput fabrication. The PEN surface has been characterized in respect of wettability, surface energy and surface roughness. Finally, the electrodes give stable and reproducible electrochemical impedance spectroscopy and cyclic voltammetry responses, using the redox couple ferrocyanide and ruthenium hexamine. The results demonstrate the robustness and functionality of the polymer-based sensor platform with minimum feature sizes of 6 mu m. (C) 2011 Elsevier B.V. All rights reserved.

【 授权许可】

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